The Kawasaki FD501D is a 0.44 l (437 cc, 26.67 cu-in) V-twin 90° liquid-cooled 4-stroke internal combustion small gasoline motor with horisontal shaft, manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FD501D has OHV (overhead valve design); cast-iron cylinder liners; float type carburetor with fixed main jet; pulse type fuel pump; full transistor ignition system with fixed timing; mechanical governor and low tone muffler. The Kawasaki FD501D uses a full pressure lubrication system with spin-on oil filter and dual element air cleaner.
The engine was equipped with solenoid shift-type electric starter and 12V-15A charging coil with a regulator.
The Kawasaki FD501D develops 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm and 32.6 Nm (3.33 kg·m; 24.06 ft·lb) at 2,800 rpm of torque. A 67.0 mm (2.64 in) cylinder bore and 62.0 mm (2.44 in) piston stroke give the motor a total of 437 cc of displacement. Compression ratio rating is 9.0:1 or 9.3:1.
General information
Engine Specifications | |
Model | FD501D |
Type | 4-stroke, OHV, V-twin 90° |
Displacement | 437 cm 3 (26.67 cu-in) |
Max. horsepower | 16.2 PS (11.9 KW; 16.0 HP) at 3,600 rpm |
Max. torque (crank PTO) | 32.6 Nm (3.33 kg·m; 24.06 ft·lb) at 2,800 rpm |
Carburetor | Float type |
Cooling system | Liquid-cooling |
Ignition system | Transistorized ignition |
Lubricating system | Pressure feed lubrication system |
Starting system | Electric starter |
Charging system | 12 Volt – 15A with regulator |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Fuel consumption | 245 g/HPh |
Cooling system | Pressurized forced circulation type |
Dimensions and Weight
Kawasaki FD501D | |
Length, mm (in) | 523 (20.6) |
Width, mm (in) | 411 (16.2) |
Height, mm (in) | 534 (21.0) |
Dry weight, kg (lb) | 37.2 (82.0) |
Tightening torque specs
Tightening torque specs | Cylinder head | 21 Nm; 2.1 kg·m; 15.5 ft·lb |
Connecting rod | 12 Nm; 1.2 kg·m; 9 ft·lb |
Flywheel | 88 Nm; 9.0 kg·m; 65 ft·lb |
Crankcase cover | 21 Nm; 2.1 kg·m; 15.5 ft·lb |
Intake manifold | 8 Nm; 8.0 kg·m; 6 ft·lb |
Oil drain plug | 25 Nm; 2.5 kg·m; 18.5 ft·lb |
Valve clearance lock nut | 8.8 Nm; 0.9 kg·m; 6.5 ft·lb |
Maintenance data
Engine | |
Maximum speed | 3500 ± 100 rpm |
Idle speed | 1500 ± 100 rpm |
Cylinder compression | 12.0 kg/cm2 (170 psi) at 500 rpm |
Valve clearance | |
Intake valve | 0.25 mm (0.010 in) |
Exhaust valve | 0.25 mm (0.010 in) |
Oil system | |
Oil type | 4-stroke or an equivalent (SC, SD, SE, SF, SG, or SH) |
Recommended oil | SAE 10W-40, 10W-30, 5W-20 |
Oil capacity (with filter changed) | 1.3 L (1.4 US qt) |
Ignition system | |
Spark plug | NGK: BPR4ES |
Spark plug gap | 0.6-0.7 mm (0.024-0.028 in) |
Spark plug tightening torque | 17 Nm; 1.7 kg·m; 12.5 ft·lb |
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Hello and Hope you can help me with a question about a horizontal fd501v. I want to redesign some components to stand it with valve covers on top and run a large compressor. I can easily modify the carburetor and filling fuild components to be in the right position. If I bolt your fd501v to a verticle plate will there be any Lubrication problems ect when I run the engine standing up?